Electric heater with low electromagnetic wave effect

Abstract

An electric heater with a low electromagnetic wave effect, the heater is mainly used to generate heat in a main pipe line, and is provided with a loop line and an electric heating line laid juxtaposed and parallel with each other with a suitable distance therebetween; by serially connecting the ends respectively of the loop line and the electric heating line as well as coupling the other ends respectively of the loop line and the electric heating line with the electric current loop of an electric source, when electric current flows through the loop line and the electric heating line, the current flows therethrough in a contrary direction to offset most of electromagnetic waves; in this way, the electromagnetic wave effect of the electric heater is effectively lowered.

Having now particularly described and ascertained the nature of my invention and in what manner the same is to be performed, what we claim will be declared in the claims followed.  
     
         1 . An electric heater with a low electromagnetic wave effect, said heater comprises a main pipe line with the function of a heating electric resistance that results heat emitting, and comprises a body of said heater, an electric source line is coupled with said main pipe line to supply electricity, and to complete an electric current loop, a heat source generated by said heating electric resistance in said main pipe line makes said body of said heater get the expected function of heat emitting; said heater is characterized by: 
 an electric heating line and a loop line are parallelly enveloped in said main pipe line, wherein, said electric heating line is exactly said heating electric resistance to generate said heat source, while said loop line functions as an electric current loop between said electric source line and said electric heating line; by serially connecting the ends respectively of said loop line and said electric heating line as well as coupling the other ends respectively of said loop line and said electric heating line with the electric current loop of an electric source, when electric current flows through said loop line and said electric heating line, said current flows therethrough in a contrary direction to offset most of electromagnetic waves; in this way, said electromagnetic wave effect of said electric heater is effectively lowered.    
     
     
         2 . An electric heater with a low electromagnetic wave effect as in  claim 1 , wherein, 
 said loop line and said electric heating line are identical by length.    
     
     
         3 . An electric heater with a low electromagnetic wave effect as in  claim 1 , wherein, 
 said loop line and said electric heating line form respectively on the two ends of said main pipe line a first electric source end and a second electric source end for coupling with said electric source line as well as a first serial connecting end and a second serial connecting end for serially connecting with each other.    
     
     
         4 . An electric heater with a low electromagnetic wave effect as in  claim 3 , wherein, 
 one end of said main pipe line is slipped thereover with a serially connecting member able to make lap jointing of said first serial connecting end with said second serial connecting end.    
     
     
         5 . An electric heater with a low electromagnetic wave effect as in  claim 3 , wherein, 
 a coupling portion is provided on one end of said electric source line, said coupling portion makes coupling of said electric source line, said first electric source end and said second electric source end.    
     
     
         6 . An electric heater with a low electromagnetic wave effect as in  claim 4 , wherein, 
 a coupling portion is provided on one end of said electric source line, said coupling portion makes coupling of said electric source line, said first electric source end and said second electric source end.    
     
     
         7 . An electric heater with a low electromagnetic wave effect as in  claim 1 , wherein, 
 said loop line is formed directly from core wires in said electric source line.    
     
     
         8 . An electric heater with a low electromagnetic wave effect as in  claim 1 , wherein, 
 surfaces of said loop line and said electric heating line are enveloped respectively with a first insulation layer and a second insulation layer, said loop line and said electric heating line are laid juxtaposed and parallel with each other, and are firmly enveloped with an insulating coating to complete the structure of said main pipe line.